CN108807681A - A kind of preparation method and application of the perovskite solar cell electron transfer layer based on low temperature red schorl phase titanium dioxide nano stick - Google Patents
A kind of preparation method and application of the perovskite solar cell electron transfer layer based on low temperature red schorl phase titanium dioxide nano stick Download PDFInfo
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- H10K30/15—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2
- H10K30/151—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2 the wide bandgap semiconductor comprising titanium oxide, e.g. TiO2
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Abstract
The present invention relates to one kind being based on low temperature Rutile Type TiO2The preparation method and application of the perovskite solar cell electron transfer layer of nanometer rods, belongs to technical field of solar batteries.The present invention utilizes TiCl4For the thin film of titanium oxide that low temperature immersion method obtains as seed layer, butyl titanate is titanium source, successfully synthesizes the TiO with Rutile Type structure under cryogenic using hydro-thermal method2Nanometer rods layer.TiO prepared by low temperature process of the present invention2Nanometer rods orientation, crystallinity are preferable, can be efficiently applied to perovskite solar cell.Compared with prior art, low temperature TiO produced by the present invention2Nanometer rods perovskite solar cell is at low cost, stability significantly improves, and photoelectric conversion efficiency can reach 18.65%.In addition, whole preparation process of the present invention is easy to operate, securely and reliably, environmental pollution is few, has good market application prospect.
Description
Technical field
The invention belongs to technical field of solar batteries, specifically, the present invention relates to one kind being based on low temperature Rutile Type
TiO2The preparation method and application of the perovskite solar cell electron transfer layer of nanometer rods.
Background technology
Since its preparation process is simple, of low cost and photoelectric conversion efficiency is high, and perovskite solar cell causes people
Extensive concern.The photoelectric efficiency of perovskite solar cell is from 3.8% fast lifting in 2009 to 2017
22.1%.According to the electron transfer layer structure of selection, perovskite solar cell is divided into plane and mesoporous battery.Relative to plane
Battery, mesoporous battery have higher transfer efficiency and smaller electric current hysteresis.The structure of mesoporous perovskite solar cell from
Include successively on down：Electrically conducting transparent substrate, hole blocking layer (compacted zone), holder+calcium titanium ore bed, calcium titanium ore bed, hole pass
The electron transfer layer of defeated layer and metal electrode, wherein high quality is the principal element for influencing perovskite battery efficiency, electron-transport
Layer is primarily present between perovskite light-absorption layer and electrically conducting transparent substrate, primarily serves collection and the transmitting effect of electronics.TiO2
Compacted zone can transmit electronics, while stop hole, effective to inhibit the compound of electrons and holes. TiO2The preparation of compacted zone
Method has immersion method, spin-coating method, atomic layer deposition method, magnetron sputtering method etc..Two kinds of wherein the most commonly used preparation methods are rotations
Coating and spray-oxidizing process.But TiO prepared by both methods2Compacted zone is required for 450 DEG C of high-temperature annealing process, and not
It is easy to get large area uniform film.Using TiCl4TiO prepared by immersion method2Compacted zone is not necessarily to high-temperature annealing process, Er Qieke
To prepare large area uniform film, be conducive in terms of being applied to flexible device and area battery preparation in the future.
The mesoporous mesoporous TiO of solar cell generally use2As shelf layer, mesoporous TiO2Generally pass through spin coating TiO2Slurry
It obtains, and needs, by high-temperature calcination, not matching that with the characteristic of flexible and transparent substrate non-refractory.Here, TiO is proposed2It receives
Rice stick is used in as supporting structure in perovskite solar cell.With traditional mesoporous TiO2It compares, TiO2Nanometer rods are in addition to making
It is adsorbed outside perovskite extinction material for shelf layer, also there are the direct electron propagation ducts of high speed.And TiO2Nanometer rods also have
Advantage prepared by low temperature and large area.By TiO2Nanometer rods are prepared in fine and close TiO2Barrier layer surface can also be controlled further
TiO2The surface topography of nanometer rods improves the load of perovskite, promotes light capture radio and charge transport efficiency.
To sum up, TiO2The preparation process of nanometer rods, including TiO2The preparation of compacted zone and TiO2The growth of nanometer rods,
It realizes at low temperature, and can large area preparation.Flexibility and the realization of only stone battery for contributing to future, are also beneficial to the big of device
Area.
Invention content
It is an object of the invention to for problem and the shortcomings of the prior art pointed in background technology, provide
One kind being based on low temperature Rutile Type TiO2The preparation method and application of the perovskite solar cell electron transfer layer of nanometer rods,
In, the TiO2Nanometer rods are synthesized using cryochem process, are solved electric in prior art intermediary hole solar cell
Sub- transport layer can not full low temperature synthesis technical barrier, be TiO2The application of nanometer rods on a flexible substrate provides may.In addition,
TiO prepared by low temperature process of the present invention2Nanometer rods orientation is good, and crystallinity is outstanding, can be efficiently applied to perovskite solar energy
Battery has a good application prospect.
In order to realize that the above-mentioned purpose of the present invention, the technical solution adopted by the present invention are as follows：
The first aspect of the invention provides a kind of based on low temperature Rutile Type TiO2The perovskite solar energy of nanometer rods
The preparation method of battery electron transport layer, wherein electron transfer layer include TiO2Compacted zone and TiO2Nanometer rods layer, the method packet
Include following steps：
(1) TiO is prepared in FTO electro-conductive glass substrates2Compacted zone
Cleaned FTO electro-conductive glass is put into culture dish, TiCl is then added4Aqueous solution, by culture dish after sealing
It is put into thermostat water bath, isothermal reaction 2h under the conditions of 70 DEG C；After reaction, take out electro-conductive glass, after cleaning up
Dry 30min, forms TiO under 150 DEG C of constant temperatures2Compacted zone；
(2) in TiO2Fine and close layer surface prepares TiO2Nanometer rods layer
(a) precursor liquid is made after positive four butyl ester of metatitanic acid, water and concentrated hydrochloric acid being mixed evenly in proportion, wherein：It is described
The volume ratio of water and concentrated hydrochloric acid is 1：1, the volume ratio of positive four butyl ester of the metatitanic acid and water is 0.02~0.03：1；
(b) it will be provided with TiO2The FTO electro-conductive glass of compacted zone faces up fixed placement in reaction kettle liner, then to
The precursor liquid described in step (a) is added in reaction kettle liner, then reaction kettle liner is put into reaction kettle, is placed in 150 DEG C of constant temperature
Isothermal reaction 100min in case；
(c) after reaction, room temperature is naturally cooled to, electro-conductive glass, the electro-conductive glass densification layer surface growth are taken out
There is TiO2Nanometer rods are rinsed, N with deionized water2Electro-conductive glass is placed in 150 DEG C of Muffle furnaces after drying and is made annealing treatment
30min is obtained of the present invention based on Rutile Type TiO2The electron transfer layer of the perovskite solar cell of nanometer rods.
Further, the titanium tetrachloride (TiCl described in above-mentioned technical proposal step (1)4) aqueous solution preparation method such as
Under：
A certain amount of titanium tetrachloride is measured with rubber head dropper, is slowly added dropwise, stirs into the mixture of ice and water stirred
After mixing uniformly, titanium tetrachloride solution is made.
Preferably, a concentration of 0.01mol/L of titanium tetrachloride solution described above of the invention.
Another aspect of the present invention provides a kind of TiO2Nanometer rods based perovskite solar cell, the solar energy
Battery is from bottom to up successively by FTO transparent conducting glass substrate, electron transfer layer, light-absorption layer, Spiro-OMeTAD hole transports
Layer and metal Au electrodes composition, wherein：The light-absorption layer is Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite material, the electricity
Sub- transport layer is described above based on low temperature Rutile Type TiO2The perovskite solar cell electron transfer layer of nanometer rods.
Further, the thickness of the transparent conducting glass described in above-mentioned technical proposal (FTO) substrate is preferably 380nm.
Further, the TiO described in above-mentioned technical proposal2The thickness of compacted zone is preferably 20nm.
Further, the TiO described in above-mentioned technical proposal2The thickness of nanometer rods layer is preferably 280nm.
Further, the Cs described in above-mentioned technical proposal0.05FA0.81MA0.14PbI2.55Br0.45The thickness of perovskite active layer
Degree is preferably 500nm.
Further, the thickness of the Spiro-OMeTAD hole transmission layers described in above-mentioned technical proposal is preferably
200nm。
Further, the Au film thicknesses described in above-mentioned technical proposal are preferably 60nm.
Perovskite solar cell described above is prepared with the following method, includes the following steps：
(a) substrate is cleaned：Cleaning agent, deionized water, acetone, absolute ethyl alcohol is utilized to surpass successively FTO transparent conducting glass
It sonication and then is handled again through UV ozone, obtains clean FTO transparent conducting glass substrates；
(b) electron transfer layer is formed in FTO electro-conductive glass substrates
The electron transfer layer is described above based on low temperature Rutile Type TiO2The perovskite solar-electricity of nanometer rods
Pond electron transfer layer is prepared using above-mentioned identical method；
(d) in TiO2Nano-rod film surface forms Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite thin film light-absorption layer
By PbI2、PbBr2, MABr, FAI and CsI be dissolved in successively in the mixed solution of DMF and DMSO, then heating stirring is mixed
Filtering after closing uniformly, is made perovskite precursor solution；Recycle step spin-coating method TiO obtained by step (c)2Nano-rod film
Perovskite precursor solution described in the spin coating of surface finally toasts 10min on 100 DEG C of Thermostatic platform surfaces, is formed
Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite thin film；
(e) hole transmission layer is formed on perovskite thin film surface
The Cs obtained by step (d)0.05FA0.81MA0.14PbI2.55Br0.45Perovskite thin film surface spin coating Spiro-OMeTAD
Solution forms Spiro-OMeTAD hole transmission layers；
(f) metal Au electrode layers are formed in hole transport layer surface
Au films are deposited in the Spiro-OMeTAD hole transport layer surfaces obtained by step (e), form metal electrode layer, to
The TiO is prepared2Nanometer rods based perovskite solar cell.
Compared with prior art, one kind of the invention is based on Rutile Type TiO2The perovskite solar cell electricity of nanometer rods
The preparation method and application of sub- transport layer has the advantages that：
(1) present invention solves TiO2The difficult point of nanometer rods seed layer low temperature preparation, the present invention use TiCl4Immersion method,
TiO is successfully synthesized under cryogenic conditions2Compacted zone.TiO prepared by low temperature process of the present invention2Fine and close layer surface is uniform, pin-free, can
As TiO2The seed layer of nanorod growth can also be used as hole blocking layer and be applied to perovskite solar cell.
(2) present invention solves TiO2The difficult point of nanometer rods low temperature preparation, the present invention are forerunner using positive four butyl ester of metatitanic acid
Object successfully synthesizes TiO under cryogenic using hydro-thermal method2Nanometer rods, by the TiO of hydrothermal synthesis2The annealed processing of nanometer rods
Afterwards, the TiO with Rutile Type structure has successfully been prepared2Nanometer rods, TiO prepared by low temperature process of the present invention2Nanometer rods orientation
Well, good crystallinity can be efficiently applied to perovskite solar cell；
(3) TiO produced by the present invention2Nanometer rods crystallinity, orientation, electron-transporting are preferable, and TiO2Nanometer rods
Pattern and length are controllable, TiO of the invention2The TiO that nanometer rods based perovskite solar cell is prepared with conventional high-temperature2Nanometer rods
Perovskite solar cell is compared, the low temperature TiO that the present invention obtains2The experimental cost of nanometer rods perovskite solar cell is apparent
It reduces, stability significantly improves, and photoelectric conversion efficiency is up to 18.65%；
(3) whole preparation process of the present invention is easy to operate, and securely and reliably, environmental pollution is few, and there is good market to answer
Use foreground.
Description of the drawings
Fig. 1 is the SEM sectional views of perovskite solar cell made from the embodiment of the present invention 1；
Fig. 2 is TiO in the embodiment of the present invention 12The surface topography SEM figures of compacted zone；
Fig. 3 is TiO in the embodiment of the present invention 12The surface topography SEM figures of nano-rod film；
Fig. 4 is TiO in the embodiment of the present invention 12The XRD spectrum of nano-rod film；
Fig. 5 is TiO in the embodiment of the present invention 12The transmission plot of nano-rod film；
Fig. 6 is TiO made from the embodiment of the present invention 12The J-V curve graphs of perovskite solar cell；
Fig. 7 is the external quantum efficiency figure of perovskite solar cell made from the embodiment of the present invention 1；
Fig. 8 is the steady state picture of perovskite solar cell made from the embodiment of the present invention 1.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the case study on implementation of the present invention.The implementation case is in technical solution of the present invention
Under the premise of implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following case study on implementation.
The information for including according to the application, to those skilled in the art can be easily to the essence of the present invention
Really description carries out various changes, without departing from spirit and scope of the appended claims.It should be understood that the scope of the present invention is not
Process, property or component defined by being confined to, because these embodiments and other descriptions are just for the sake of schematic
Illustrate certain aspects of the present disclosure.In fact, this field or those skilled in the relevant art obviously can be to embodiment party of the present invention
The various changes that formula is made all cover within the scope of the appended claims.
For a better understanding of the present invention rather than limit the scope of the invention, expression dosage used in this application,
All numbers of percentage and other numerical value, are understood to " about " be modified with word in all cases.Therefore,
Unless stated otherwise, otherwise digital parameters listed in specification and appended book are all approximations, may
It can be changed according to the difference for the desirable properties for attempting to obtain.Each digital parameters at least should be considered as according to being reported
Effective digital pass through the conventional method acquisition that rounds up.
Embodiment 1
A kind of TiO of the present embodiment2Nanometer rods based perovskite solar cell, the solar cell is from bottom to up successively
By FTO transparent conducting glass substrate, electron transfer layer, light-absorption layer, Spiro-OMeTAD hole transmission layers and metal Au electrode groups
At, wherein：The extinction layer material is Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite material, the electron transfer layer are upper
It states described based on Rutile Type TiO2Perovskite solar cell electron transfer layer (including the TiO of nanometer rods2Compacted zone and
TiO2Nanometer rods layer), wherein：
The thickness of described transparent conducting glass (FTO) substrate is 380nm；The TiO2The thickness of compacted zone is
20nm；The TiO2The thickness of nanometer rods layer is 280nm；The Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite activity
The thickness of layer is 500nm；The thickness of the Spiro-OMeTAD hole transmission layers is 200nm, and the Au film thicknesses are
60nm, the electrode area are 6.0mm2。
TiO described above2Nanometer rods based perovskite solar cell is prepared with the following method, including walks as follows
Suddenly：
(a) substrate is cleaned
Choose fluorine doped tin oxide transparent conducting glass (FTO) be substrate, the substrate be square structure, thickness 1.1mm,
Length and width be 2cm × 2cm, by substrate successively pass through cleaning agent, deionized water, acetone, absolute ethyl alcohol be ultrasonically treated, 30 points every time
Clock, each solvent handle 1 time, are then handled within 15 minutes through UV ozone room, obtain clean FTO transparent conducting glass substrates.
(b) TiO is prepared in FTO electro-conductive glass substrates2Compacted zone is as follows：
(i) TiCl is prepared4Aqueous solution
TiCl is taken with rubber head dropper4, slowly it is added dropwise into the mixture of ice and water stirred, stirs 1 hour, prepared
TiCl4A concentration of 0.01M of solution；
(ii) TiO is prepared2Compacted zone
The cleaned FTO of step (a) is put into culture dish, the TiCl configured is added4Aqueous solution is sealed against being put into
In water-bath, with 70 DEG C of water-baths 2 hours.After the completion of water-bath experiment, the back sides FTO first are cleaned with cotton swab, then use deionization respectively
Water, washes of absolute alcohol sample.Sample dry 30min in 150 DEG C of insulating box is cleaned up, fine and close TiO is formed2It is thin
Film.
(c) in TiO2Fine and close layer surface forms TiO2Nanometer rods layer, is as follows：
(i) the positive four butyl esters aqueous solution of metatitanic acid is prepared
The hydrochloric acid (37%) of 38ml is added dropwise in the deionized water of 38ml, after stirring 15min, the titanium of 1.06ml is added dropwise
Positive four butyl ester of acid, stirs 30min；
(ii) TiO is prepared2Nanometer rods layer
TiO is contained on 5 surfaces2The FTO of compacted zone, which faces up, to be fixed on holder, is put into the reaction kettle of 100ml
In courage, the positive four butyl esters aqueous solution of metatitanic acid prepared and completed is added thereto.And reaction kettle liner is put into reaction kettle to tighten and is added
Gu entire reaction unit is put into 150 DEG C of insulating box and reacts 100min.Room temperature is naturally cooled to, is taken out with TiO2It receives
The FTO substrates of rice stick, are rinsed with deionized water, N are used in combination2Drying, finally by TiO2Nanometer rods are put into 150 DEG C of Muffle furnace and move back
Fiery 30min, i.e., in TiO2Fine and close layer surface forms TiO2Nanometer rods layer.
(d) in TiO2Nano-rod film surface forms Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite thin film light-absorption layer
By the PbI of 0.545g2, the PbBr of 0.0796g2, the CsI of the FAI and 0.018g of the MABr of 0.022g, 0.195g is molten
In the DMSO (volume ratios 4 of the DMF and 0.22g of 0.076g：1) in, 70 DEG C of heating stirrings filter after 30 minutes, in TiO2Nanometer
Perovskite thin film is prepared with 4000 revolutions per seconds of rotating speed spin coating on rod film, using ethyl acetate as anti-solvent；Sample is placed on
It is baked 10 minutes in thermal station, temperature is 100 DEG C.
(e) hole transmission layer is formed on perovskite thin film surface
The Spiro-OMeTAD of 72.3mg is dissolved in the chlorobenzene of 1.1g, the TBP of 28.8ul is added thereto, stirs 15 points
Clock；The cobalt salt of the lithium salts and 30mg that take 52mg is dissolved in the acetonitrile of 76mg respectively, take respectively later 17.5 ul lithium salt solution and
The cobalt salt solution of 29ul is added thereto, and stirring is filtered after 30 minutes, in the Cs of step (d)0.05FA0.81MA0.14PbI2.55Br0.45
Perovskite thin film surface is with 4000 revolutions per seconds of 20 seconds hole transmission layers for preparing 200nm of rotating speed spin coating.
(f) metal Au electrode layers are formed in hole transport layer surface
10-4Under Pa vacuum conditions, Au films are deposited in the Spiro-OMeTAD hole transport layer surfaces obtained by step (e),
The Au film thicknesses are 60nm, form metal electrode layer, to complete the TiO2Nanometer rods based perovskite solar-electricity
The assembling in pond.
Film characterization and device detection
The TiO that step (c) is prepared2Nanometer rods layer has carried out transmitted spectrum, X-ray diffraction, Flied emission electricity respectively
Sub- flying-spot microscope analysis.The instrument that X-ray diffraction (XRD) analysis uses is D8Advance, and determination condition is 0.001 °/step
Scanning.Electronic scanner microscope is carried out under the voltage of 20KV.
In addition by the above-mentioned assembled TiO of the present invention2Nanometer rods based perovskite solar cell carries out photoelectric properties test.
Current density-photovoltage (J-V) feature measurement of device is that the 2400 source table of Keithley controlled by computer carries out.Test be
It is carried out in the environment of simulated solar irradiation AM1.5G irradiations, with 100mW cm-2Xenon lamp based on solar energy simulation
Device (comes from Newport Co., LTD.).The DSP locking phases that the external quantum efficiency (EQE) of battery is studied system model by Stamford are put
Big device SR830 adds WDG3 monochromes suit and 500W xenon lamps to measure.The intensity of the light of each wavelength and the monocrystalline silicon photovoltaic electric of standard
It calibrates in pond.These test results are listed in attached drawing respectively.
Wherein, Fig. 1 is the SEM sectional views for the perovskite solar cell that the present embodiment is assembled into, can be clearly by Fig. 1
Observe the internal structure of perovskite solar cell, wherein low temperature TiO2Compacted zone and low temperature TiO2The contact of nanometer rods is very
Closely, be conducive to be promoted the comprehensive performance of device.In addition, the crystallinity of the present embodiment perovskite light-absorption layer is very good, also more have
Conducive to the absorption to visible light.
Fig. 2 is the present embodiment low temperature TiO2The SEM of compacted zone schemes, low temperature TiO2Compacted zone surface smoothness and compactness are non-
Chang Hao has completely covered the surfaces FTO.
Fig. 3 is the present embodiment low temperature TiO2The SEM plan views of nanometer rods, as seen from Figure 3, low temperature TiO2Nanometer rods
Surface topography is excellent, and orientation and crystallinity are fine, is more advantageous to the quick transmission of electronics, improves the performance of battery.
Fig. 4 is the present embodiment low temperature TiO2The XRD spectrum of nanometer rods can show that the present embodiment is made from XRD spectrum
Low temperature TiO2The crystalline phase of nanometer rods is Rutile Type.
Fig. 5 is low temperature TiO2The UV-vis transmitted spectrums of nanometer rods, due to low temperature TiO2The orientation of nanometer rods is excellent, institute
With low temperature TiO2The transmissivity of nanometer rods~90%.
Fig. 6 is the present embodiment by low temperature TiO2The J-V curves for the solar cell that nanometer rods are assembled into.Wherein open circuit electricity
Pressure, short circuit current, fill factor and photoelectric conversion efficiency are respectively：1.08V 22.40mA/cm2, 76.88% and 18.65%.
Fig. 7 is low temperature TiO2The EQE of nanometer rods perovskite solar cell.The short circuit current calculated by EQE collection of illustrative plates is
21.51mA/cm2The short circuit current of very close J-V curves.
Fig. 8 is electric current and the steady state picture of battery efficiency, and as seen from Figure 8, the solar cell of the present embodiment is in 0.89V
Fixed-bias transistor circuit under stabling current and efficiency be respectively 20.96mA/cm2With 17.92%.
Claims (10)
1. one kind being based on low temperature Rutile Type TiO2The preparation method of the perovskite solar cell electron transfer layer of nanometer rods,
Middle electron transfer layer includes TiO2Compacted zone and TiO2Nanometer rods layer, it is characterised in that：Described method includes following steps：
(1) TiO is prepared in FTO electro-conductive glass substrates2Compacted zone
Cleaned FTO electro-conductive glass is put into culture dish, TiCl is then added4Culture dish is put into perseverance by aqueous solution after sealing
In warm water bath, isothermal reaction 2h under the conditions of 70 DEG C；After reaction, electro-conductive glass is taken out, in 150 DEG C of perseverances after cleaning up
Dry 30min, forms TiO under the conditions of temperature2Compacted zone；
(2) in TiO2Fine and close layer surface prepares TiO2Nanometer rods layer
(a) precursor liquid is made after positive four butyl ester of metatitanic acid, water and concentrated hydrochloric acid being mixed evenly in proportion, wherein：The water and
The volume ratio of concentrated hydrochloric acid is 1：1, the volume ratio of positive four butyl ester of the metatitanic acid and water is 0.02~0.03：1；
(b) it will be provided with TiO2The FTO electro-conductive glass of compacted zone faces up fixed placement in reaction kettle liner, then to reaction
The precursor liquid described in step (a) is added in kettle liner, then reaction kettle liner is put into reaction kettle, is placed in 150 DEG C of insulating boxs
Isothermal reaction 100min；
(c) after reaction, room temperature is naturally cooled to, electro-conductive glass is taken out, the electro-conductive glass densification layer surface growth has TiO2
Nanometer rods are rinsed, N with deionized water2Electro-conductive glass is placed in 150 DEG C of Muffle furnaces after drying and carries out annealing 30min, i.e.,
It is made of the present invention and is based on Rutile Type TiO2The electron transfer layer of the perovskite solar cell of nanometer rods.
2. according to claim 1 be based on low temperature Rutile Type TiO2The perovskite solar cell electron-transport of nanometer rods
The preparation method of layer, it is characterised in that：The preparation method of titanium tetrachloride aqueous solution described in step (1) is as follows：
A certain amount of titanium tetrachloride is measured with rubber head dropper, is slowly added dropwise into the mixture of ice and water stirred, stirring is equal
After even, titanium tetrachloride solution is made.
3. according to claim 2 be based on low temperature Rutile Type TiO2The perovskite solar cell electron-transport of nanometer rods
The preparation method of layer, it is characterised in that：A concentration of 0.01mol/L of the titanium tetrachloride solution.
4. a kind of TiO2Nanometer rods based perovskite solar cell, it is characterised in that：The solar cell from bottom to up successively by
FTO transparent conducting glass substrate, electron transfer layer, light-absorption layer, Spiro-OMeTAD hole transmission layers and metal Au electrodes composition,
Wherein：The light-absorption layer is Cs0.05FA0.81MA0.14PbI2.55Br0.45Perovskite material, the electron transfer layer are claim 1
~3 any one of them are based on low temperature Rutile Type TiO2The perovskite solar cell electron transfer layer of nanometer rods.
5. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：It is described transparent to lead
The thickness of electric glass (FTO) substrate is 380nm.
6. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：The TiO2It causes
The thickness of close layer is 20nm.
7. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：The TiO2It receives
The thickness of rice stick layer is 280nm.
8. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：Described
Cs0.05FA0.81MA0.14PbI2.55Br0.45The thickness of perovskite active layer is 500nm.
9. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：The Spiro-
The thickness of OMeTAD hole transmission layers is 200nm.
10. TiO according to claim 42Nanometer rods based perovskite solar cell, it is characterised in that：The Au films
Thickness is 60nm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109920649A (en) * | 2019-04-03 | 2019-06-21 | 湖北大学 | One-dimensional super long TiO2Nanometer stick array and preparation method thereof and the application in dye-sensitized solar cells |
| CN112993171A (en) * | 2019-12-18 | 2021-06-18 | 有研工程技术研究院有限公司 | Preparation method of titanium dioxide electron transport layer for perovskite solar cell |
| CN112687806A (en) * | 2020-12-28 | 2021-04-20 | 华侨大学 | Trans-structure perovskite solar cell electronic transmission layer and preparation method thereof |
| CN112687805A (en) * | 2020-12-28 | 2021-04-20 | 华侨大学 | Perovskite solar cell electronic transmission layer and preparation method thereof |
| CN112687806B (en) * | 2020-12-28 | 2023-05-30 | 华侨大学 | Preparation method of trans-structure perovskite solar cell electron transport layer |
| CN112687805B (en) * | 2020-12-28 | 2023-06-02 | 华侨大学 | Preparation method of perovskite solar cell electron transport layer |
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